Comparison of MSI Radeon RX 580 Gaming 4G video card vs MSI Radeon RX 6600 XT GAMING X 8G video card by specifications and benchmarks. MSI Radeon RX 580 Gaming 4G runs at 1.257 GHz base clock speed and has 4 GB of GDDR5 memory, while video card MSI Radeon RX 6600 XT GAMING X 8G runs at 1.968 GHz base clock speed and has 8 GB of GDDR6 memory. The TDP of the first video card is 185 W, and the second is 160 W. Compare the table of benchmark results to find out which graphic card is better.